Electrical insulator



AugQ L 1925. 2,75499589 G. B. MATTHEWS ELECTRICAL INSULATOR Filed March 51, 1925 @wozu u* 3h00/mlb@ Patented Aug. 11, 1925.

. A1,549,589 PATENT OFFICE.

GEORGE B. MATTHEWS, OF WASHINGTON, DISTRICT 0F COLUMBIA.

f ELECTRICAL INSULA'roR.

Application tiled March 31, 1928. Serial No.,629,079.

T o 'whom it may concern:

Be it known that I, GEORGE B. MATTHEWS, citizen of United States, residing at 1109 17th Street NW., in the city of Washington, District of Columbia, have invented certain new and useful Improvements in Electrical Insulators, of which the following is a speciication.

This invention relates to electrical insulators, and has special reference to the typeo insulator used in insulating one length of wire from another, the invention being peculiarly adapted for utilization in connection with wireless telegraphy and telephony for the purpose of supporting the aerials in such system. f

One important object of the invention is to improve the general construction of devices of this character.

A second important object of the invention is to provide an improved form of insulator of this character wherein the insulator is so constructed and arranged that the wiring connections are protected from the action of rain, snow and sleet, so that at noA time can the two wires connected to the insulator be connected by a film of water from rain,.an accumulation of snow, or a coating of ice resulting from sleet.

With the above and other objects in View as will be hereinafter apparent2 the invention consists in general of certain novel details of .construction and combinations of parts hereinafter fully described, illustrated in the accompanying drawings and speciiically claimed.

in the accompanying drawings like charters of reference indicate like parts in the several views, and:

Fig. 1 is a plan view of a preferred form oi' the improved insulator. n

liig. 2 is a side elevation thereof.

Fig. 3 is a vertical longitudinal section therethrough.

Fig. 4 is a side elevation of a second form of insulator.

Fig. 5 is a vertical longitudinal section through the second form.

Fig. 6 is a plan view of the second form..

In the embodiment of the invention, as illustrated in Figures 1, 2 and 3, it will be seen that there is provided the usual short spindle-shaped body 10 having at each end a peripheral flange or skirt 11, and projecting at or slightly above the center of this body, from each end thereof, is a connecting eye 12 for the purpose'cf joining the wires to the insulator. From the upper and side portions o this insulator projects a hood orhousing, which in this Jform is made integral with the insulator, and consists at each end of an upper housing portion 13 tapered to a point and provide along its tapering edges with concaveportions 14 forming a species of trough.

'ln like manner, the hood or housing eX- tcnds downward over the hood or sides oi' the insulator, as at 15, and terminates at each end in a pointed portion 16 curved to provide troughs 17 adjacent its end edges.

It will be noted that these portions project sufciently far from the body of the insulator to `cover the connecting eyes 12, and protect them against rain beating either downward or at a slant, and that by reason of the trough-shape arrangements at the end edges of the hood rain falling on top of the hood is carried oli sideways, and thus is prevented from running back on the underside of the hood and down the end of the insulator.

lt will also be noted that in order to assist in thus preventing the moisture from creeping baclr toward the insulator, the parts oi the hood are inclined downward, as can be clearly seen by reference to Figure 3. m

ln the form shown in Figure 5, an ordinary stock insulator is used, which is pro-- vided as usual with. the end skirt or flanges 19 and eyes 20. in this Jr'orrn the insulator 18 is soldered or leaded, as at 21 into a hood or housing which consists ot an inverted trough-shape plate 22 having outwardly flaring sides, and having its ends closed by downwardly and outwardly inclined end plates 23 notched centrally at their bottom edge, as at 2li, and having the diagonal portions at each side of the notches curved to provide directing troughs 25. Also each of these end lates carries an upper centrally disposed guard member 26 protectin the upper part of the notch 24.

v n certain instances, it is desirable to supply these insulators with means to prevent rotation thereoi at their longitudinal axis. This is peculiarly necessary where twisted wires or cables are connected, because in such instances, the strain on these cables exerts a very considerable tortional eliz'ect on the insulator. In such instances I provide an arm 27 which is screwed into the bottom of the insulator, and carries on its lower end a weight 28, which thus acts to holdl the insulator against rotation through the force of gravit There "has thus been provided a simple and efiicient device of the kind described,

l and for the purpose specified.

vit is desired to include all such as properly come within the scope claimed.

Having thus described the invention, what is claimed as new, is:

1'. An insulating device for connecting two wires in alineinent which consists of an insulating body provided with a hood projecting longitudinally from the peripheral portion of the body at the ends and extending downward over the sides of the body, said hood having moisture directing trough portions at its end edges, the upper portions of the projecting ends of the hoods being inclined downward to prevent moisture from creeping back beneath the hood to ward the insulator. y

.2. An insulating device comprising a substantially spindle-shaped body of insulating material having peripheral skirts at its ends and provided with a substantially spindle-shaped hood extending from the ends of the body and downwardly over its sides, the ends of said hood being provided with concave portions adjacent their edges constituting moisture directing troughs.

3. An insulating device comprising a substantially spindle-shaped body of insulating material having peripheral skirts at its ends and provided with a substantially spindle-shaped hood extending from the, ends of the body and downwardly over its sides, the sides of said hood extending below the skirts of said body, the ends of said hood being provided with concave portions adjacent their edges constituting moisture directing troughs.

4. An insulating device comprising a substantially spindle-shaped body of insulating material having peripheral skirts at its ends and provided with a substantially spindle-shaped hood extending from the ends of the bodyfand downwardly over its sides, the sides of said hood extending below the skirts of said body, the ends of said hood being provided with concave portions adjacent their edges constituting moisture directing troughs, the projecting ends of said hood being notched at the sides whereby to form an upper tapered projection and lateral side projections.

5. An insulating device of the kin-d described comprisirg an insulating body, a hood projecting over the ends of Said body and downwardly over the sides of the body, said hood being permanently attached to said body, and a counterweight depending from the underside of the body.

In testimony whereof I aiiix my signature.v

GEORGE B. MATTHEWS. 

